kennedy



1. E. KENNEDY.

GYRATORY CBUSHING APPARATUS.

APPLICAIION FILED ()CT- 23. 1911.

1,3 1 0,798, Patented July 22, 1919.

4 SHEETSSHEET I.

mines $23: ,4 I

Q -d izlhventor: A t b X MIA/3W v Amy J. E. KENNEDY.

GYRATORY CBUSHING APPARATUS.

,APPLICATION mu) OCT- 23. 1911.

1,310,798. Patented July 22, 1919.

4 SHEETS-SHEET 2.

- I 5 mmm 2 @ZYQD J. E. KENNEDY. GYRATORYYCR'USHING APPARATUS.

APPLICATION FILED OCT- 23. I91?- 1,310,798, I Patented July 22, 1919. v

4 SHEETSSHEET 3.

I F Inventor: %//''f%m y f J.E.KENNEDY. GYRATORY CRUSHING APPARATUS.

APPLICATION man OCT. 23, 1'91]. M 1,310,798, Patented 22,1919.

4 SH HEET 4- while its lower extremity is journaled in an JOSEPH E. KENNEDY, on NEW YORK, N. Y.

GYRATORY GBUSHING APPARATUS.

Specification of Letters Patent.

Patented July 22, acre.

Application filed October 23. 1917. Serial No. 198,023;

paratus,-.for the reduction of stones, ore, etc.,.

of the class in which a gyratory shaft is pivotally suspended at its upper extremity eccentric bearing 'mounted in a rotatable sleeve. lhe invention consists 1n the spe ClfiC construction and arrangement of parts herein described and claimed, distinctive features being the peculiar formation of the coverplateon which the gyratory shaft is suspended; the means for securing together the component parts of the casing; the use of reversible concaves opposed to the co noidal crushing head and with attrition surfaces substantially arallel to the main vertical axis of rotation of the gyratory shaft and. in other details of construction, all as hereinafter more fully set forth.

In the accompanying drawings,

Figure 1, is a plan of my improved crushing apparatus, with means for driving same; '1 I Fig. 2, is a central vertical sectional e1eva tion taken mainly upon plane of line 2.-2,

Fi 1; i

Big. 3, is a rear elevation showing the driving means;

Fig. 4:, is a plan of the cap plate, with the covers removed; 1

Fig. 5, is a horizontal section taken upon plane of line 5+5,;Fig.2, t

Fig. 6, is a front elevation ofone of the concave crushing sections.

In general characteristics the apparatus illustrated in the drawings isprimamly the same in principle'andoperatlon as set forth in Letters Patent No. 1,085,867, issued to me Feb. 3, 1914, No. 1090816, issued to me March 17, 1914, and 0. 1,176,833, issued to ,me March 26, 1916, to which. reference may be'had as showing the type of gyratory' crusher to which my present improvements are especially applicable. Thus the truncated conical crushing head a", is rigidly secured to the shaft A, and is yrated thereby within a concave crushing c amber b, from the lower portion of which the" reduced material drops into the chute chamber d, in the usual manner. 7

The shaft A, is suspended on an inclosed top or cover C, of special construction, having a central hub 0, formed with an inturned bottom flange or annular shoulder c, on which the said shaft A, is fulcrumed in such manner as to allow of its gyration by means of the eccentric bearinge, in which the lower end of said shaft A, is mounted. lhe upper extremity-of the shaft A, is screw threaded and provided with a nut collar a, which bears on a sleeve a resting in turn on a gasket a interposed between it and said annular shoulder" c,:of' the hub c, of the cap plate (1, as shown particularly in Fig. 2,-a

' bushingcfibeing interposed between the hub plate G, medial shell B, andbottom shell D,

areformed with vertically coincident cored bolt -holes through all of which pass bolts 7,

. j, by means of which all three of said parts C, B, and 'D, of the casing are rigidly securedtogether. To insure perfect aline- .mentiof these parts, and hence of the gymtorvjshaft-A, the upperflange .of the bottom shellD, is formed with a concavo conoidal seat d into which fits the convexo-conoidal bearing 6 on the lower edge of the medial shell Bi In like manner the upper edge of thesaid medial shell B, is formed Wlth a concavo-conoidal seat'b into which fits the convexo-conoidal bearing 0 at the inner side of theaforesaid annular flange c, on the cap plate C. 'Thus the tightening of the bolts f, wedges and centralizes the frame work B, C, D, into a unitary structure, so that the gyratory shaft A, is suspended in accurate operative alinement with the rotatable sleeve 6', in which the-eccentric bearing 0, is mounted.

To the upper part of this eccentric hearing sleeve 6, isrigidly secured, as by the key e the driven pulley e", by which said sleeve 6, is rotated to impart a gyratory rotation to the shaft A, through the medium of the aforesaid eccentric bearing 0,

cant from the exterior of the rotatable sleeve 6', to the interior thereof. Thus, the sleeve e, is formed with .an annular flange e", by which it is rotatably supported on the lower casing or bottom plate g,a floating ring 6 being interposed between said annular flange ef, and the actual rest or seat 9'. Surrounding the seat 9, is an annular gutter 9 to receive the oil which passes out around the floating ring a The bottom of this annular gutter 9 is inclined as indicated by'the dotted line 9 in Fig. 2, to conduct the oil thus received into a pocket 9 from which the oil is returned in part through the duct g, to the space in the we ing below the shaft, bearing and sleeve, -to

again percolate upward by capillary attraction between the opposed surfaces to be lubricated, as set forth iIlISilld Letters Patent No. 1,17 6,833. The rotation of the parts thus insures an automatic circulation of the oil which is most effective for their lubrica tion. In order however to positivel insure a supply of lubricating oil tothe s eeve 0', above the eccentric bearing 6, and thereby effect a gravity feed to said bearing 6, to supplement the upward capillary feed to the annular gutter 9 I abstract a portion of the oil from the pocket g, by means of the pipe 12, leading to the pump P, by which it is returned by the pipe p, through the filter 12 to' the sleeve 6 as'indica-ted in Fig. 2. This-utilizationzand combination of both capillary and gravity attraction obviates all danger of injuryfrom lack of lu- 'brication through failure of ample supply of oil to the contacting surfaces and safe guards the apparatus in this respect against carelessness or indifference on the part of attendants; I

The force pump P, is driven by motion derived from an operative part, as by a belt 39 passing around a drive pulley p, attached to the pump P, and around a groove formed for it in the upper part of the hearing sleeve 6. The upper end of the latter is closed by a dust guard h; and the inlet pipe 7), from the pump P, may enter the said sleeve 6, through said dust guard h, as

' shown in Fig. 2. h, is a dust guard which closes the opening in the upper part of the drive chamber in the usual manner.

The eccentric sleeve pulley e", is preferably grooved peripherally to receive one or more drivebelts i, usually in the form of horizontally so as to 'afi'ord practically universal adj ustment as related to the eccentric sleeve pulley 6*. By this means also taut and" accurate Service of the ropes or belt 71, to thesaid pulley e", is attained, so that the eccentric sleeve 6, may be rotated at a relatively high speedas compared with the old method of driving it .by miter gearing. Thus by my new method of gyratory drive the speed and capacity of the apparatus may be safely increased one hundred per cent. or more. The provision of the universally adjustable idlers I, also enables me to readily inst-all the crushing apparatus, at a much lower level than the available power, as is frequently necessary in practice. 3 Heretofore, so far as I am aware the concaves opposed to the conoidal crushing head a, have been inclined with relation thereto at an acute angle'as in my patents hereinbefore referred to, the concavoconoidal wearing surface thus formed necessitating the use of concave sectors which are of truncated V-shape in general outline, the top edges being-wider than the bottom edges. The maximum of wear on such sectors is at and adjacent to their lower edges, so that when the latter are reduced by wear to a prescribed degree the sectors have to be re moved and replaced by new ones. I obviate this difficulty in the present case by making the concave surface of the crushing chamber 1), cylindrical, it being built up of a series of .concave sections, 8, each forming a part or division of the cylinder. .Hence, when the lower edge of the concave cylinder is worn to the limit the concaves 8, may be reversed in position to bring the .unworn edge ad jacent to the lower portion ofthe crushing head a. The concave plates 8, are preferably of manganese steel, paneled out in the back and fitted with cast-iron filler blocks, as is customary with the inclined concaves heretofore used 1n conjunction with gyratory crushers of this class.

Y The cover plate C, is'formed with a cap a", wh ch may be removed to effect the vertical ad uStment of the gyratory shaft A, by

means of the nut a"; and it is formed with a plurality of openings 0", 0 some of which may be used for feed and some for observation, 'covers'0 being provided for those not during the operation of the apparatus so as to prevent the escape of dust, etc, in that direction. The ribs 0?, on the cover plate C, reinforce and sustain the hub 0, upon which the gyratory shaft A, is suspended.

'hat I claim as my invention and desire to secure by Letters Patent is:

1. In crushing apparatus of the charac ter designated, a crushing chamber, a closure plate provided with feed openings and closures and covering the upper partthereof and made with a hub the lower interior portion of which is formed with an inturned annular bearing shoulderconstituting the fulcrum for the gyratory shaft, said gyratory shaft, a nut collar on .the upper extremity thereof, and abearing sleeve interposed between said nut collar and said inturned bearing shoulder on the closure plate, for the purpose described. 2. In crushing apparatus of the character designated, a crushing chamber, a closure plate provided with feed openings and closures and covering the upper part thereof and made with a hub the lower interior portion of which is formed with an inturned annular bearing shoulder constituting the fulcrum for the gyratory shaft, said gyratory shaft, a nut collar on the upper extremity thereof, a bearing sleeve interposed between said nut collar and said inturned bearing shoulder on the closure plate, and a cap fitted on the top of said hub and protecting said nut collar and bearing sleeve, for the purpose set forth. 3. In crushing apparatus of the character designated, a crushing chamber, a closure plate provided with feed openings and closures and covering the upper part thereof the lower interior portion of which is madewith a feed opening and having a hub formed with an inturned annular bearing shoulder constituting the fulcrum for the gyratory shaft, said gyratory shaft, a nut collar on the upper extremity thereof, and a bearing sleeve interposed between said nut collar and said inturned bearing shoulder on the closure plate, for the purpose described.

4:. In crushing ap aratus of the character designated, a crushing chamber, a closure and formed with a plurality of feed openings and closures therefor and with a hub the lower portion of which is made with an inturned annular bearing shoulder constituting the fulcrum for the gyratory shaft, said gyratory shaft, a nut collar on the upper extremity thereof, and a bearing sleeve interposed between said nut collar and said inturned bearing shoulder on the closure plate, for the purpose described.

' 5. In crushing apparatus of the character designated, a crushing chamber, a closure plate provided with feed openings and elosures and covering the upper part thereof and formed with a plurality of feed openings and closures therefor and with a central hub from which project radially reinforcing ribs positioned between said feed openings, the lower interior portion of said hub being made with an inturned annular bearing shoulder constituting the fulcrum for the gyratory shaft, said gyratory shaft, a nut collar on the upper extremity thereof, and a bearing sleeve interposed between said nut collar and said'inturned bearing shoulder on the closure plate, for the purpose described.

' 6. In crushing apparatus of the character designated, the combination with the crushing chamber and gyratory shaft, of a closure plate formed with feed openings and closures and covering the upper parts of said crushing chamber and said gyratory shaft, for the purpose described.

JOSEPH E. KENNEDY.

,Witnesses G120. WM. Mm'rr, DOROTHY MIAT'I. 

